Intracoronal bleeding in the tooth pulp due to trauma is one of the causes of tooth discoloration. Anterior tooth discoloration often cause esthetic problem that affect individual perfomance. Internal bleaching is a non-vital bleaching method performed after endodontic treatment using strong oxidator agent in pulp chamber. This case report discusses about internal bleaching treatment with walking bleach technique on tooth 11 after endodontic treatment. Concentration of hidrogen perokxide 35% was applied for 3-7 days, this procedure was repeated until the tooth color was gained. The tooth color was accomplished in second visit. As conclusion is internal bleaching as treatment of tooth discoloration due to trauma can provide a good result with good endodontic treatment.